i am trying to connect from application layer to solr search layer i get this error in liferay log file, could you please help me on this ## Heading ##List item
00:00:06,363 ERROR [liferay/search_writer/SYSTEM_ENGINE-5][SolrIndexWriter:134] Max delete retries reached (uid 15_PORTLET_46713_FIELD_59339731) org.apache.solr.common.SolrException: java.util.concurrent.TimeoutException: Could not connect to ZooKeeper localhost:6511 within 10000 ms at org.apache.solr.common.cloud.SolrZkClient.(SolrZkClient.java:148) at org.apache.solr.common.cloud.SolrZkClient.(SolrZkClient.java:99) at org.apache.solr.common.cloud.SolrZkClient.(SolrZkClient.java:89) at org.apache.solr.common.cloud.ZkStateReader.(ZkStateReader.java:195) at org.apache.solr.client.solrj.impl.CloudSolrServer.connect(CloudSolrServer.java:240) at org.apache.solr.client.solrj.impl.CloudSolrServer.request(CloudSolrServer.java:501) at org.apache.solr.client.solrj.request.AbstractUpdateRequest.process(AbstractUpdateRequest.java:118) at org.apache.solr.client.solrj.SolrServer.deleteById(SolrServer.java:239) at org.apache.solr.client.solrj.SolrServer.deleteById(SolrServer.java:225) at com.liferay.portal.search.solr.SolrIndexWriter.deleteDocument(SolrIndexWriter.java:122) at com.liferay.portal.search.solr.SolrIndexWriter.updateDocument(SolrIndexWriter.java:241) at sun.reflect.GeneratedMethodAccessor362.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.liferay.portal.kernel.util.MethodHandler.invoke(MethodHandler.java:83) at com.liferay.portal.kernel.messaging.proxy.ProxyRequest.execute(ProxyRequest.java:57) at com.liferay.portal.kernel.messaging.proxy.ProxyMessageListener.receive(ProxyMessageListener.java:51) at com.liferay.portal.kernel.messaging.InvokerMessageListener.receive(InvokerMessageListener.java:72) at com.liferay.portal.kernel.messaging.ParallelDestination$1.run(ParallelDestination.java:69) at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask._runTask(ThreadPoolExecutor.java:678) at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask.run(ThreadPoolExecutor.java:589) at java.lang.Thread.run(Thread.java:745) Caused by: java.util.concurrent.TimeoutException: Could not connect to ZooKeeper localhost:6511 within 10000 ms at org.apache.solr.common.cloud.ConnectionManager.waitForConnected(ConnectionManager.java:223) at org.apache.solr.common.cloud.SolrZkClient.(SolrZkClient.java:140) ... 21 more